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Electric valve

A technology of electric valves and valve chambers, which is applied in the direction of lifting valves, valve devices, valve details, etc., can solve the problems of increased flow loss, reduced flow rate, and faster flow rate, etc., and achieve the effect of smaller flow loss and restrained flow rate reduction

Active Publication Date: 2021-04-30
FUJIKOKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] However, the present inventors confirmed that, for example, when maintaining the capacity of the electric valve, that is, maintaining the inner diameter of the horizontal pipe member and the lower pipe member and the diameter of the valve port, when the valve main body (cylindrical base) is miniaturized (For example, when reducing the pipe diameter of the cylindrical base), the flow velocity in the valve chamber becomes faster, and the flow loss becomes larger, so the flow rate decreases.

Method used

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Embodiment Construction

[0067] Hereinafter, embodiments of the electric valve according to the present invention will be described with reference to the drawings.

[0068] figure 1 It is a longitudinal sectional view showing one embodiment of the electric valve according to the present invention, figure 2 yes figure 1 Sectional view of the U-U arrow section. In addition, in figure 2 In, the spool is omitted to represent.

[0069] The electric valve 1 of the illustrated embodiment is a two-way flow electric valve: it is used as an expansion valve in, for example, a heat pump refrigeration and heating system, and fluid (refrigerant) flows in two directions (the first flow direction and the opposite flow direction). The second flow direction) flows, and corresponds to the large flow flow path in at least one direction.

[0070] The electric valve 1 of this embodiment and Figure 4 The electric valve 1' of the conventional example shown is the same, and includes a valve main body 5, a housing 58...

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Abstract

An electric valve, the first opening (11a) of which is formed on the side of the valve main body (5) in such a way as to communicate with the valve chamber (7), and the horizontal pipe part (11) connected to the first opening (11a) The part opening to the valve chamber (7) is an expanded pipe part (11B) having a larger inner diameter than the other part (general part (11A)). In addition, the diameter of the valve port (9) of the valve seat member (8) is the same as the inner diameter of the lower pipe member (12) and the inner diameter of the general portion (11A) of the horizontal pipe member (11). This electric valve can suppress the drop in the flow rate while achieving further downsizing and cost reduction.

Description

technical field [0001] The invention relates to an electric valve, in particular to an electric valve used in heat pump cooling and heating systems. Background technique [0002] Figure 4 A conventional example of such an electric valve is shown. The electric valve 1' of the conventional example shown in the figure is provided with: a valve main body 5, a valve chamber 7 is divided inside the valve main body 5, and a first opening 11a and a second opening 12a are formed on the side and bottom; a valve seat member 8, the The valve seat part 8 is fixed to the second opening 12a of the valve body 5, and has a valve seat 8a with a valve port 9 opening to the valve chamber 7; a valve core 20, which is arranged in the valve chamber 7 in a liftable manner; And the stepping motor 50, the stepping motor 50 is used as a lift driving part to lift the valve body 20 relative to the valve seat 8a. [0003] Specifically, the electric valve 1' of the conventional example includes: a valv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/32F16K1/52F16K1/42F16K27/02F16K31/04F16K47/02
CPCF16K1/32F16K1/42F16K1/52F16K27/02F16K31/04F16K47/02
Inventor 原田贵雄荒井良太田渕健资
Owner FUJIKOKI MFG CO LTD